A pendulum clock is taken to the moon (g = 1.6 N/kg). How long must the pendulum be in order for the clock to continue keeping accurate time (1 second cycle)?
3.2 m
7.9 m
0 0.25 m
0.041 m

Aspecified volume of space contains an electric field for which the magnitude is given by e=e0cos(ωt). suppose that e0 = 20 v/m and ω = 1.0 × 107 s−1. part a what is the maximum displacement current through a 0.80 m2 cross-sectional area of this volume? express your answer with the appropriate units. idisp, max i d i s p , m a x = nothing nothing request answer part b how would this area have to be oriented relative to the electric field to get this maximum displacement current?